397 



25. CissiTES Haekeeianus, Lsqx. 



Sassafras EarManum, Lsqs., Cret. Flora, p. 81, PL XI, figs. 3, 4, imd PL XXVII, fig. 2. 



One leaf is separately figured, and doubtfully referred to this species. 

 It is thick, nearly round, enlarged on the sides, very obtuse at the top, and 

 broadly wedge-form at the base, petioled, perfectly entire, three-nerved 

 from above the base, with two pairs only of craspedodrome parallel, and 

 equilateral reinlets. It is much smaller than any of the leaves formerly 

 figured. The lateral lobes are scarcely distinguishable, the leaf being 

 nearly round, the secondary veins curving near the point of attachment 

 to the midrib, pass up straight to the borders in the same angle of 

 divergence of fifty degrees, as that of the primary lateral veins. 



26. Hamamelites Kansaseanus, Lsqx. 



This fine leaf completes the one figured and described in Cretaceous 

 Flora (p. 62, PI. XXX, fig. 8), under the name of AInus Kansaseana. The 

 leaf is obovate, narrowly truncate at the slightly peltate and narrowed 

 base, regularly undulate-dentate, pinnately nerved, with sis pairs of 

 alternate secondary veins and two pairs of nearly horizontal marginal 

 veinlets underneath ; the veins are all craspedodrome, straight from the 

 midrib to the border, the lower ones ramified, and all joined by distinct 

 strong nervilles in right angle. 



Except that the base is slightly peltate, this leaf has all the characters 

 of the genus Hamanielis. The leaf fignred and described in the Creta- 

 ceous Flora (p. 62, PL TV, fig. 1) as Alnites quadrangularis belongs 

 probably to the same generic division. 



27. CREDNERIA ? MICROPHYLLA, sp. IIOV. 



Leaves coriaceous, round, entire, long-petioled; nervation pinnate, 

 with seven pairs of alternate laterual veins, and two pairs of marginal 

 horizontal veinlets underneath. 



The lateral veins are more open and closer toward the base, the three 

 or four lower pair branching, and all thick craspedodrome, joined by 

 thick fibril!^. But for the non-peltate base of the leaves, they should be 

 described under the generic division of Protojjhyllum, having a simi- 

 larity of nervation with Protoplujllum minus. The large base of the 

 leaves, the two horizontal strong veinlets under the principal lateral 

 veins, give to this species represented by many specimens an appearance 

 strikingly similar to that of Credneria acuminata and C. integerrima, Zenk. 

 There is, however, a marked difference in the camptodrome nervation. 

 Another leaf figured like the former appears to be a variety of the same, 

 the difference being only in the deeply undulate border. In this leaf, 

 still much smaller than the former, the details of areolation are discern- 

 ible, the netting being formed of small meshes nearly exactly rectangu- 

 lar by subdivisions of thefibrillte in veinlet, at right angle; the veinlets 

 following parallel and close to the borders are still more distinct and 

 their position more definite than in the larger leaf. 



28. Protophylltjm? tPvILOBATIT^ni, sj). nov. 



Leaves very large, thick, coriaceous, palmately three-lobed, deeply 

 and coarsely nerved, three-nerved from a distance above the base of 

 the petiole or the point where it passes under the auricle, peltate ; lat- 

 eral veins open, angle of divergence sixty degrees. Secondary veins 

 close, camptodrome or craspedodrome. 



These fiueleaves, of which a comparatively large number has been dis- 

 covered in Kansas, have the character of the species 's\'-hich has been 



